chromium/components/browsing_topics/epoch_topics.cc

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/browsing_topics/epoch_topics.h"

#include "base/containers/contains.h"
#include "base/hash/legacy_hash.h"
#include "base/json/values_util.h"
#include "base/logging.h"
#include "base/numerics/checked_math.h"
#include "components/browsing_topics/common/semantic_tree.h"
#include "components/browsing_topics/util.h"
#include "third_party/blink/public/common/features.h"
#include "url/gurl.h"

namespace browsing_topics {

namespace {

const char kTopTopicsAndObservingDomainsNameKey[] = …;
const char kPaddedTopTopicsStartIndexNameKey[] = …;
const char kConfigVersionNameKey[] = …;
const char kTaxonomyVersionNameKey[] = …;
const char kModelVersionNameKey[] = …;
const char kCalculationTimeNameKey[] = …;
// `taxonomy_size` is a deprecated key. Do not reuse.

bool ShouldUseRandomTopic(uint64_t random_or_top_topic_decision_hash) { … }

}  // namespace

EpochTopics::EpochTopics(base::Time calculation_time)
    : … { … }

EpochTopics::EpochTopics(base::Time calculation_time,
                         CalculatorResultStatus calculator_result_status)
    : … { … }

EpochTopics::EpochTopics(
    std::vector<TopicAndDomains> top_topics_and_observing_domains,
    size_t padded_top_topics_start_index,
    int config_version,
    int taxonomy_version,
    int64_t model_version,
    base::Time calculation_time,
    bool from_manually_triggered_calculation)
    : … { … }

EpochTopics::EpochTopics(EpochTopics&&) = default;

EpochTopics& EpochTopics::operator=(EpochTopics&&) = default;

EpochTopics::~EpochTopics() = default;

// static
EpochTopics EpochTopics::FromDictValue(const base::Value::Dict& dict_value) { … }

base::Value::Dict EpochTopics::ToDictValue() const { … }

CandidateTopic EpochTopics::CandidateTopicForSite(
    const std::string& top_domain,
    const HashedDomain& hashed_context_domain,
    ReadOnlyHmacKey hmac_key) const { … }

void EpochTopics::ClearTopics() { … }

void EpochTopics::ClearTopic(Topic topic) { … }

void EpochTopics::ClearContextDomain(
    const HashedDomain& hashed_context_domain) { … }

}  // namespace browsing_topics